scholarly journals Effects of Foliar Applications of Smoke-Water and a Smoke-isolated Butenolide on Seedling Growth of Okra and Tomato

HortScience ◽  
2007 ◽  
Vol 42 (1) ◽  
pp. 179-182 ◽  
Author(s):  
Manoj G. Kulkarni ◽  
Glendon D. Ascough ◽  
Johannes Van Staden

The ecologic significance of smoke-related seed germination is now well recognized. Consequently, smoke solutions and a pure butenolide, the active compound from smoke that stimulates germination of a number of plant species, show great potential for enhancing the growth of vegetable crops. Achieving maximum production and better and faster growth of the seedlings has always been a priority for vegetable growers. This study therefore highlights the effects of foliar application of smoke-water and a butenolide on seedling growth of okra [Abelmoschus esculentus (L.) Moench] and tomato (Lycopersicon esculentum Mill.). Treating okra seedlings with smoke-water (1:500 v/v) showed a significant (P < 0.05) increase in shoot/root length, shoot fresh/dry weight, number of leaves, total leaf area, and stem thickness compared with the control treatment. Treatment of okra seedlings with smoke-water significantly (P < 0.05) increased the absolute growth rate (AGR) per week. However, the seedling vigor index (SVI) did not improve as a result of no change in root fresh weight. On the other hand, foliar application of smoke-water and butenolide showed a pronounced effect on the seedling growth of tomato. Most of the growth parameters examined for both the treatments were significantly (P < 0.05) increased, resulting in a significantly (P < 0.05) higher SVI and AGR than the control. This study indicates that the foliar application of smoke-water or butenolide may be a useful and inexpensive technique for enhancing seedling growth of vegetable crops.

Author(s):  
Y. Rajasekhara Reddy ◽  
G. Ramanandam ◽  
P. Subbaramamma ◽  
A. V. D. Dorajeerao

A field experiment was carried out during rabi season of 2018-2019, at college farm, College of Horticulture, Dr. Y.S.R. Horticultural University, Venkataramannagudem, West Godavari District, Andhra Pradesh. The experiment was laidout in a Randomised Block Design with eleven treatments (viz., T1- NAA @ 50 ppm, T2-NAA @ 100 ppm, T3-GA3 @ 50 ppm,  T4-GA3 @ 100 ppm, T5-Thiourea @ 250 ppm, T6-Thiourea @ 500 ppm, T7-28-Homobrassinolide @ 0.1 ppm, T8-28-Homobrassinolide @ 0.2 ppm, T9-Triacontinol @ 2.5 ppm, T10-Triacontinol @ 5 ppm, T11-(Control) Water spray) and three replications. The treatments were imposed at 30 and 45 DAT in the form of foliar spray. Foliar application of GA3@ 100 ppm (T4) had recorded the maximum plant height (108.20 cm), leaf area (9.53 cm2) and leaf area index (0.74). Foliar application of thiourea @ 250 ppm (T5) had recorded the maximum values with respect to number of primary branches (15.03 plant-1), number of secondary branches (83.40 plant-1), plant spread (1793 cm2 plant-1), fresh weight (376.29 g plant-1), dry weight (103.54 g plant-1) and number of leaves plant-1((298.8). The same treatment (T5) had recorded the highest values with respect to crop growth rate (1.44 gm-2d-1), chlorophyll-a (1.40 mg g-1), chlorophyll-b (0.076 mg g-1) and total chlorophyll contents (1.48 mg g-1) in the leaves.


2015 ◽  
Vol 55 (2) ◽  
pp. 126-135
Author(s):  
Magd El-Morsi Awad El-Morsi ◽  
Montaser Fawzy Abdel-Monaim

Abstract Root rot and wilt disease complex was detected in several fig (Ficus carica L.), grapevine (Vitis vinifera L.), and pomegranate (Punica granatum L.) transplants in nurseries and new orchards of the El-Kharga, Baris, Balate, El-Dakhla, and El-Farafrah districts, of the New Valley governorate, Egypt. The percentage of root rot/wilt incidence and severity on fig, grapevine, and pomegranate transplants in the surveyed districts differed. The average percentages of root rot/wilt incidence and severity, in the surveyed districts, were 41.26, 31.42% in fig, 38.2, 29.5% in grapevine, and 32.1, 23.7% in pomegranate transplants, respectively. The most frequently isolated fungi from rotted roots of fig, grapevine, and pomegranate transplants were Fusarium oxysporum, Rhizoctonia solani, and Macrophomena phaseolina. In pathogenicity tests, all the tested fungi were pathogenic to fig, grapevine, and pomegranate transplants. Under laboratory conditions, all of the following tested bio-agents: Azotobacter sp., Bacillus cereus, B. megaterium, and B. subtilis, were able to inhibit growth of the causal pathogens to different degrees. The effect of these bio-agents individually and/or mixed, when used as a soil drench treatment, were varied in reducing the incidence and severity of root rot/wilt diseases in fig, grapevine, and pomegranate transplants under greenhouse conditions. The mixed bio-agents gave the highest protection against root rot/wilt diseases compared with the individually used of bio-agents. All treatments significantly increased plant height, number of leaves/transplant, leaf area, fresh and dry weight/transplant compared with the control treatment.


2017 ◽  
Vol 48 (3) ◽  
Author(s):  
Al-hayany & et al.

This experiment was carried out  at the private nursery located at Baquba city/ Diyala governorate during 2015 agricultural season on three years old Citrus rootstocks seedlings to study the effect foliar application of salicylic acid  on  seedlings tolerance to soil salinity. The experiment included 24 treatment represented  three factors: soil salinity levels (1.14,4.62 and 5.30 dSm-1) , two levels of salicylic acid (0 and 250 mg.l -1) and four citrus rootstocks (Sour orange, Cleopatra mandarin, Volkamariana lemon and Troyercitrange ),and their interactions with three replications . The results showed that: increasing soil salinity  reduced most studied growth parameters (number and length of branches, number of leaves  and  fresh weight of the vegetative and root system). Salicylic acid application caused an increment in number of leaves, fresh and dry weight of root system. Citrus rootstocks Troyercitrange was superior on other rootstocks by giving highest values branches length, whereas Cleopatra mandarin rootstock was superior in the number of leaves.


2020 ◽  
Vol 7 (2) ◽  
pp. 199-207
Author(s):  
Kamelia Mondal ◽  
Joyanti Ray ◽  
Md Yasin Ali

Salinity is an emerging problem among the abiotic stresses of plants in Bangladesh. One easy way to cope with the problem of salinity is to exploit the genetic potential of plants for their adaptability to adverse soil conditions. Salt tolerance improvement might be achieved through selection from already existing germplasm which can be done by quick method particularly in early growth stages of crops. A laboratory experiment was conducted to determine the effect of salinity on germination and the seedling growth of five cotton genotypes. Two factors include genotypes (CB-9, CB-10, CB-12, CB-14 and CB-15) and salt solution of different concentrations (control -0 dS m-1, 4 dS m-1, 8 dS m-1, 12 dS m-1 and 16 dS m-1) were used. Relative to control treatment, germination energy and germination capacity at 16 dS m-1 was maximum in CB-12 (0.72 and 0.77 respectively) whereas germination percentage (0.99) was maximum in CB-9 and the relative value of all the above parameters was minimum in CB-15 (0.02, 0.13, 0.41 and 0.09, respectively). In case of seedling growth parameters, shoot length, seedling vigor index and dry weight at 16 dS m-1 were maximum in CB-9 (0.67, 0.64 and 0.77 respectively) relative to control whereas the relative value of all those parameters was minimum in CB-15 (0.5, 0.17, 0.31 and 0.59 respectively). Considering all germination and seedling growth parameters, CB-9 was supposed to be superior genotype followed by CB-12, CB-10 and CB-14 whereas genotype CB-15 was more susceptible than other genotypes against salinity stress. Res. Agric., Livest. Fish.7(2): 199-207,  August 2020


2019 ◽  
Vol 30 (1) ◽  
pp. 38
Author(s):  
Ammal Abdelsalam Abdelrahman

The present study was carried out in the botanical garden / department of biology /college of science in ALmustansiriyah University, Baghdad. During winter 2017 under natural environmental conditions in plastic house. The aim of this study was to evaluate the activity of the N- Yttrium oxide application to reduce salt stress in 1 and 2 gm/ Lof NaCl on seed germination and seedling growth of mung been. The results reveal that N- Y2o3 gave the highest results in seed germinations and seedling growth trait (seedling lengths, shoot length, number of leaves, number of secondary roots and dry weight of seedling) of mung bean than gibberellin and aqueous extract of Liquors roots under 1 and 2 gm / L NaCl and has no significant different with control treatment.


Author(s):  
Babak Motesharezadeh ◽  
Samira Ghorbani ◽  
Hossein Ali Alikhani ◽  
Reza Fatemi ◽  
Qifu Ma

Background: Selenium (Se) is a crucial component of selenoaminoacids and selenoproteins. Therefore, Se-enriched agricultural products can reduce health complications induced by Se deficiency. Objective: This research was carried out to investigate the effects of Se bio-enrichment on Basil grown in calcareous and non-calcareous soil systems and also to evaluate the changes in Se concentration in the soil after harvesting. Methods: The experiments executed in two calcareous and one non-calcareous soil systems, and different Se application methods (control, soil application, seed inoculation, foliar application, and soil + foliar application) were administered. Selenobacteria, a plant growth-promoting rhizobacteria (PGPR), derived from the soil was used as a biofertilizer, compared to the other Se sources. Results: The results showed that both soil types and the methods of Se application had significant effects (P ˂ 0.01) on root and shoot dry weights and concentrations of P, K, Zn, Fe, and Se in both of the root and shoot. Shoot dry weight of plants treated with foliar Se was maximum in the calcareous soil. Compared to the control treatment, foliar application of Se increased shoot Se content in both calcareous and non-calcareous soils by 242% and 204%, respectively. Furthermore, the increase in shoot Se concentration in calcareous soil induced by Se application increased the concentration of other nutrients in the shoot and root. Plant growth parameters and concentrations of nutrients were significantly increased by using selenobacter inoculum. Conclusion: The application of Se-containing compounds can improve vegetable quality. Considering the daily requirement of the human body for minerals and nutrients, enriching basil with Se can play an important role in community health.


Author(s):  
Arom Jantasorn ◽  
Ponpawit Pongsupap ◽  
Thanaprasong Oiuphisittraiwat

Background: Rice (Oryza sativa L.) is a major cereal crops planted in Thailand for both local consumption and export. The objective of this study was to investigate the allelopathic effect of Caesalpinia sappan L. and Crateva magna (Lour.) DC. extracts in promoting a rice cultivar, Khao Dowk Mali 105 (KDML105) seed germination and seedling growth, at 7 and 14 days after sowing (DAS). Methods: The C. sappan and C. magna plants were cleaned with tap water and air dried in room temperature then cut into small pieces and ground into fine powder. Plant crude extracts was prepared using ethanol as solvent. Result: The results showed that rice seed treatment with C. sappan and C. magna extracts was significant (all p less than 0.05), increasing root length, shoot fresh and dry weight and root fresh and dry weight of rice seedlings at 14 DAS. Seed treatment with these two plant extracts led to a significantly greater vigor index of the KDML105 rice seedling cultivar, when compared with the control. Interestingly, the seed treatment with C. magna extract at a 100 ppm concentration was found to produce the highest enhancement in the overall rice seedling growth parameters, including the vigor index of seedlings. The results showed that a low concentration of C. magna extracts can be potentially used in promoting seedling growth of rice since they improved the overall growth parameters. 


2021 ◽  
Vol 12 ◽  
Author(s):  
Waheed Akram ◽  
Waheed Ullah Khan ◽  
Anis Ali Shah ◽  
Nasim Ahmad Yasin ◽  
Guihua Li

Current research was conducted to explore the effects of liquiritoside on the growth and physiochemical features of Chinese flowering cabbage (Brassica rapa subsp. parachinensis) under lead (Pb) stress. Lead stressed B. rapa plants exhibited decreased growth parameters, chlorophyll, and carotenoid contents. Moreover, Pb toxicity escalated the synthesis of malondialdehyde (MDA), hydrogen peroxide (H2O2), flavonoids, phenolics, and proline in treated plants. Nevertheless, foliar application of liquiritoside mitigated Pb toxicity by decreasing oxidative stress by reducing cysteine, H2O2, and MDA contents in applied plants. Liquiritoside significantly increased plant height, shoot fresh weight and dry weight, number of leaves, and marketable value of Chinese flowering cabbage plants exposed to Pb toxicity. This biotic elicitor also enhanced the proline, glutathione, total phenolics, and flavonoid contents in Chinese flowering cabbage plants exposed to Pb stress compared with the control. Additionally, total glucosinolate content, phytochelatins (PCs), and non-protein thiols were effectively increased in plants grown under Pb regimes compared with the control plants. Overall, foliar application of liquiritoside can markedly alleviate Pb stress by restricting Pb translocation in Chinese flowering cabbage.


2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 138-141
Author(s):  
P. Lepakshi ◽  
P. Vinaya Kumar Reddy

The study entitled “Effect of different growing media on seed germination and seedling growth ofJamun (Syzygium cumunii L. Skeels)” was carried out at College of Horticulture, Dr. Y.S.R Horticultural University, Venkataramannagudem, West Godavari District, AndhraPradesh, during the year 2018-19.Jamun seeds were sown in media comprising of soil, cocopeat and vermicompost in different ratios, Among which the media comprising of Soil + cocopeat + vermicompost @ 1:1:1 has shown best results in germinationparameters like earlier initiation of germination(10.91 days), less days taken to 50 percent germination(14.5 days) , highest percent of germination at 15 and 30 DAS(48.37% and 98.14 % respectively). The growth parameters likemaximum plant height(96.33cm), more number of leaves(55.75), increased girth(7.58mm) and chlorophyll content, lengthiest primary root(25.82cm), more number of secondary roots per seedling(41.51), highest fresh and dry weight of the shoot(80.24 and 20.67g.) and root and good root: shoot ratio(0.28)at 150 days after sowing were observed in plants that were sown in media comprising of Soil + cocopeat + vermicompost @ 1:1:1.


2021 ◽  
Vol 3 (1) ◽  
pp. 23-27
Author(s):  
Hesam Vattani ◽  
Naser Vafaee ◽  
Alireza Ladan Moghadam ◽  
Narges Keshavarz

Parsley is a biennial plant from the Apiaceae family that is used in the food, pharmaceutical, perfume and cosmetic industries. This plant has various mineral such as Fe and vitamins including A, B and C and grown in most parts of the world. Nano-fertilizers are a good alternative to sulfated fertilizers due to their higher solubility and gradual release of particles than conventional fertilizers. In order to investigate the effect of foliar application zinc on growth and yield of parsley, an experiment based on randomized complete blocks with 6 treatments and three replications was performed in the experimental field of Imam Khomeini Higher Agricultural Education Center. Treatments included foliar application of Nano zinc chelate fertilizer (0.5, 1 and 1.5 g/L) and zinc sulfate (1 and 1.5 g/L). The foliar application was performed in 4 to 6 leaf stage and repeated every 14 days till before harvesting. Number of leaves, plant height, leaf area, leaf length and width, fresh and dry weight of leaves and stems were measured. The results showed that the highest amount of the mentioned traits was obtained in the foliar application of 1.5 g/L Nano zinc chelate fertilizer and the lowest values were obtained at the control treatment. It is noteworthy that there is no significant difference between 1 and 1.5 g/L Nano zinc chelate fertilizer in terms fresh and dry weight of leaves and stems and both treatments are statistically in the same group. Therefore, foliar application of 1 g/L Nano zinc chelate fertilizer is economically recommended.


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